Mixing-machine.



No. 832,722. PATBNTED OCT. 9, 1906.

R. N. CUNNINGHAM & J. W. MQPHERSON. v

MIXING MACHINE.

APPLICATION FILED 002.20. 1905.

2 SHEETS-SHEET 1.

F .2 WITNESSES: A7 INVENTORS ATTORNEYS J 7 PATENTBI) OCT. 9, 1906 R. N.CUNNINGHAM & J. W. MoPHERSON.

MIXING MACHINE.

, APPLICATION FILED 00120, 1905.

2 SHEETS-SHEET 2.

INVENTOR S l/f/Can WITNESSES! bin-7W4,

wggzom/ rson/ longitudinal shaft2. T

UNI D STATES PATENT CFFI E.

nor N. CUNNINGHAM-AND JOHN iv. ASSIGNORSTO THE AMERICAN CONCRETEMACHINERY COMPANY, or

COLUMBUS. OHIO, A CORPORATION or orno;

" MIXING-MACHINE.

liable to st out of working order.

With t e above and other objects in view cation and illustrated in theaccompanying of the discharge end of the mixer, and Fig, 4 en i ,drum isprovided with a head 7, through the .ed on standards 5, extendingupwardly from MCPHERSON. OF COLUMBUS. OHIO,

Specification of Letters Patent.

' Patented Oct. 9, 1906.

1'0 all w/wm it may concern:

Be it known that we, Roy N. CUNNING HAM and JOHN W. MCPHERSON, citizensof the United States, residing at Columbus, in the county of Franklinand State of Ohio, have invented certain new and useful Im-- provementsin 1 Mixing-Machines, of which the following is a specification. I Ourinvention relates to new and useful improvements in mixing-machines. yhe object of the invention is to provide a mixer comprising a drum and amixing device revolving in o posite directions and mixing vanes or blaes carried by the drum coacting with the mixing device, together with apartially hollow shaft having perfora-' tions and associated with themixing device andmeans for sup lyi water to the hollow portion of thesha t an I causing the same to spray from the perforations.

Another object of, the invention is to pro vide a device of thecharacter described that will be'strong, durable, and efficient and simple and com aratively inexpensive to makeand one in w 'ch the severalparts will not be the invention consists of the novel details ofconstruction and operation, a referable embodiment of which is describein the specifidrawings, wherein-- Figure 1 is a side elevation of ourmixer. Fig, 2 is a; longitudinal sectional view taken on the line a:mof' Fig. 3. Fig. 3 is an elevation is a transverse vertical sectionalview ta on the lineyy ofFi .2.

. ,In'the drawings the numeral 1 designates a cylindrical drum throughwhich extends a e drum is supported on the shaft by'spiders 3, which aresecured to the inner periphery of the drum. and loosely engage about theshaft, so as to turn thereon. At each end the shaft is supported inbearing-boxes 4, which are mounta suitable base-frame 6. At its feed endthe oentralportionof which the annular spout 8 '-hopper 'iprojects. Bythis arranges to be mixed and which are fed into the hopper 9 aredelivered dience being had to F rectly into the drum by the spout 8.Oppositely-disposed blades or vanes 10 are secured of the shaft arespaced apart and act to force.

the mixture toward the discharge end of the drum while carrying on themixing opera-- tion. About the shaft 2 and between the bladeswithrespect to their longitudinal d sposition collars 11 are secured.From opposite sides of these. collars'mixing-paddles 12 project, thesaid paddles on one side of'each collar being disposed at an oppositeangle to the paddles on the opposite side, both addles extending atangles to the-longitu mal axis ofthe'drum and at different angles fromthe blades 10, the said paddles, however, being set so as to tend toforcethe materials toward the discharge end as the mixing operation iscarried out. The addles are of such length as to pass between t e blades10 as the shaft and .drum are revolved.-

'obtained'by revolving the drum 1 and its blades 10in one directlon andthe shaft2 and the paddles 12 in the opposite direction.

For carrying out this operation we provide on the outer eriphery asprocket-ring 13, which is engaged. by a sprocket-chain 14 passingthereabout and running over a small sprocket 15, fixed on a drive'shaft16. The driveshaft' 16is mounted in a bearing-standard 17 and abearing-box 18, secured on the side of the standard 5 beneath the hopper9. The shaftprojects beyond the bearing-box 18 and carries a spur-gear19, which meshes with a ear 20,.carried on the end of the shaft 2. %astand loose pulleys 21 and 22, respectively, are arranged on the shaft 16in the usua way.- Mot1on being imparted to the fast pulley by suitablemeans revolves the shaft 16 and the sprocket 15 to theright, refers. 3and 4. The drum 1 is also'revol'ved to t e right by the sprocketchain14, the spur-gear 19 being likewise re volved. to the ri ht. Thespur-gear 19, revolving to the right and meshing with the gear 20,causes the same to revolve to the left, and

the gear 20, being fixed on the shaft 2, revolves the same and thepaddles 12 to the left. Bv

this arrangement the drum and its" blades 1l) are revolved to the right,while the shaft 2 and its paddles 12 are revolved to the left, so thatthe hm terials fed into the drum from the y forced toward the dischargeend of the drum.

The shaft 2 is hollowed-out up to aapoint beyond the center, asindicated at 24, so that perforations 23, extending through the hollowportion, will be dis osed centrally of the drum. A suitable pac ing orplug 25 is inserted in the end of the shaft to close the same, and apipe 26 is passed through the packingand extends into the hollow portionof the shaft well up into the perforated portion. The horizontal portion26 of the pipe is connected to a vertically-extending portion 27, inwhich is arranged a suitable valve 28, so that the amount'of'waterdelivered into the pipe 26, and consequently to the hollow vportion 24of the shaft, may be regulated.

.The portions of the pipe are'suitably fixed so as to remain stationarywhile the shaft "'revolves about the portion 26. The water or otherliquid delivered from the pipe 26- into the hollow portion 24 of'theshaft s rays through the perforations 23 from all si es of the shaft, soas to thoroughly dampen the mixture, it being understood that the materials are mixed to theproper degree before beingsubjected to the spray.p

The operation of our mixer is as follows:

The materials to be mixed are fed into the hopper 9, from which theywill be delivered by the spout 8 into the drum 1 The drum and its blades10 revolvin in one direction and the shaft 2 and the pa dles 12revolving 12 continue to the materials an propel the same forward throuh the moistening or spraying zone to the en of the drum. I After passingthrough the spray the materials which are. moistened are thoroughlymixed until they are discharged from the open end of the drum ina'perfect mixture, ready for immediate use.

hopper 9 will be thoroughly mixed and gradha 1 Our machine is moreespecially designed for mixing concrete, and by regulating the valve 28either a dry or-a wet mixture may be produced. -Whilethe machine is moreespecially adapted for mixing concrete, it is equally as well adaptedfor use in mixing various materials.

' Having now fully described our invention, what we claim, and desire tosecure by Letters Patent, is-

'1. In a device of the character described, the combination with arotative open-ended drum, of a plurality of blades secured to the innersurface of said drum and extending toward the axial line thereof, saidblades being set at such an angle as to feed material contained in saiddrum toward the open end thereof, a hopper adapted to feed material tothe opposite end of the drum, a shaft which passes through the lowerportion of'the hopper and through the drum, blades carried by saidshaft, means for imparting motion to said shaft in an opposite directionfrom the 1 rotation of the drum, the blades carried by the'shaft beingset at such an angle opposite to the angle of the drum-blades as to feedthe material contained in the drum toward the open end of the drum, saidshaft having an 'openin formed part way therethrough, and

means' or conductingliquid to the interior of the hollow shaft.

' 2. In a device of the character described, the combination with arotative drum of blades carried by the inner surface of the drum and,proi'ectin to'ward the axial line thereof, said b ades eing setat' suchan an- I gle as to feed materialfed to the'interior of the drum' towardone endthereof, means for feeding material totheio posite end of saiddrum, a shaft 'u'p'on jw 'ch said drum is vmounted, a plurality .ofblades secured to said shaft and ext nding and working between theblades of the drum, and means for rotating said shaft "in the oppositedirection from the drum. 2 v V In testimony whereof we aflix oursignatures in presence of two witnesses.

.ROY N. CUNNINGHAM.

f JOHN W. MCPHERSOAN.

Witnesses:

' C; C. SHEPHERD,

'A. L. PHELPS.

